honigbaum



No. -6I7,74'5. Patented lan. I7 |899. L. H. H'NIGBAUM.

. cowL. (Application median. 19, 1897.)

(No Model.)

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PATENT LOUIS II. IIONIGBAUM, OF SAN FRANCISCO, CALIFORNIA;

COWII; I

srEcIEIcATIoN forming para of Letters Patent No'. 617,745, dated January '17, 1899. Application filed January 19, 1897. 1 Serial No., 619,730. (No model.)

To all whom t may concern:

Be it known that I, LOUIS H. I-IONIGBAUM, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in Ventilators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. l

This invention relates to improvements in ventilators, and has more'particular relation to ventilators for attachment to the tops of chimneys or Ventilating-shafts to prevent the draft from blowing down the shaft or chimney.

The invention consists of certain novel constructions, combinations, and arrangements of parts, all of which will be hereinafter more particularly set forth and claimed.

In the accompanying drawings, forming part of this speciiication, Figure l represents a side elevation of a device embodying my invention. of the same. Fig. 3 represents an enlarged detail central vertical section through a portion of the casing containing one of the rubber buffers. Fig. 4 represents a top plan View of one of the apertured lugs for containing the antifriction-balls, and Fig. 5 represents a central vertical section through the same.

A in the drawings represents the attachingpipe, B the casing surrounding the upper end of the same, and C the protecting hood or guard. The attaching-pipe A may be of any desired construction adapted to be secured to the upper end of a chimney or ventilating flue. The casing B, which is of greater diameter than the pipe A, is preferably hexagonal in cross-section and is mounted about the upper end of the pipe A by suitable radial arms h, so that there may be a clear draft up about the pipe A between said arms. Said casing B is provided upon each of its sides with a draft-opening b', covered by hinged doors b2. One of these doors is provided with a hinged rod b3, the upper and lower ends of which protrude beyond the upper and lower edges of the door, so that they can be mounted in apertured lugs b4 and h, respectively, secured near the upper and Fig. 2 represents a top plan viewl lower edges of the casing. The lug b4 comprises an apertured attaching-plate b and an enlargement la7, having a passagel)8 therethrough. The lug b5 comprises an apertured attaching-plate b9, having an enlargement Z910, formed with a socket Z111, in which is mounted an antifriction-ball Z112, preferably of glass.

It will be observed from the foregoing description that the entire weight of the door falls upon the glass ball Z912, and thus the door may open or close with a minimum amount of friction. Also, the said ball will not cause corrosion in the socket b, and thus will prevent all noise from the operation of the supporting-rod in said socket. In order to prevent the doors b2 slamming shut against the casing B with such force as to cause an abnormal amount of noise, I provide the wall of said casing with a plurality of buffers D. Each of these buifers comprises a headed block of rubber adapted to be slipped through a suitable aperture formed in the casing, so as to protrude infront of said casing and receive the concussion of the door. Each of these blocks is held firmly in position by anattaching-plate d, that is passed about the rear head of said block and secured to the casing by suitable screws or rivets d. `The doors b2 upon diametrically opposite sides of the casing B are connected by pivoted rods 513, so that as the door upon one side is blown closed the companion door upon the opposite side is opened. This peculiar construction is to prevent the wind blowing the smoke and other products of combustion down the chimney, as only the doors away from the wind are open, and thus a complete suction at the top of the chimney is established. A The guard C has an upper and lower conical surface and is of slightly-greater diameter than the pipe A, and is mounted in the upper end of the casing B by suitable radial arms c.. The office of the upper conical portion of the said guard is to provide a perfect water and snow shed, while the under conical portion is intended to divert the smoke and other products of combustion from the center of the shed toward the periphery, so that they may readily discharge out ofthe top of the casing B.

It will also be observed that this ventilator will be automatically operated by the direca tion of the Wind and only the doors or shutters upon the lee side of the casing B opened. At the same time this operation of said doors Will be accomplished Without any noise or concussion because of the antifriction-bearings and the rubber buffers.

A material advantage results from making the casing hexagonal in cross-section for the :reason that the Wind can act upon only three sides thereof and the other three sides Will be protected, so that the doors which cover the openings in the lee sides may remain open and not be affected by the Wind, which would cause the doors to continually blow to. In devices of a similar nature heretofore employed in which the casings are square the wind can obtain access to as many as three of the doors at one time, and as a result at least two of the doors will be alternately opened andclosed continuously by the action of the wind, thus making a disagreeable slamming noise and causing unnecessary wear on the parts.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a ventilator, a casing hexagonal in crosssection and provided in each side With a draft= opening,- in combination with a correspond# ing series of doors hinged on vertical axes at the sides of said openings and designed to close the same, a series of rods connecting the doors in opposite pairs, and a protecting-cone arranged at the upper end of the casing, said cone being of less diameter than the casing so as to leave a surrounding space and being of greater diameter than the flue-pipe, substantially as and for the purpose described.

In testimony whereof l have signed this specication in the presence of two subscribing Witnesses.

LOUIS Il. IIONIGBAUM.

Witnesses:

FRITZ ILLING, GEORGE HOGAN. 

